Incorrect Reported Size after cleaning completed

Version: 2.18.878

After cleaning I get this summary of size of files that is deleted.

This size value is incorrect.

CLEANING COMPLETE - (219.022 secs)

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13,819,351,007,314.1MB removed.

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Details of files deleted

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IE Temporary Internet Files (3180 files) 13,819,351,007,250.8MB

WOW! That's a lot of megabytes... That's 13,179,160 Terabytes :o Definitely sounds like a bug to me!